Ruin....That 1 spell does not put out enough firepower to come close to equaling the damage that those monsters do to you ( % wise per attack comparing your health to theres ). Plus they are aggressive and seem to be faster than you are. So you cannot run around and expect to find a place to get a spell off. You will get hit long before it happens.You don't have any summons yet. All you have is the ruin spell. So a toe to toe fight with either is certain death.